Wire connection for electric plugs



March 30 O. ABBADINI WIRE CONNECTION FOR ELECTRIC PLUGS Filed NOV. 11,1922 gn'ucufoz 0. ii& $01272 Z WNM Patented Mar 30, 19 26.

ononmo 'AJBBADINI, or FAIRBANK, rnmvsnvanm.

wmn CONNECTION roa nnncrarc rimes.

Application filed November 11, 1922, Serial No. 600,830.

To all whom it may concern:

Be it known that I, Ononnro Aaannnv a citizen of the United States,residing at Fairbank, in the county of Fayette and State ofPennsylvania, have invented certain new and useful Improvements in WireConnections-for Electric Plugs; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art. to which it appertains to make and usethe same.

This invention has relation'to a connec-.

tor for electric wires, which will admit of the wire 'being quicklyconnected and readily disconnected as may be required, and which willavoid torsional strain as provision is had for a relative turning of theparts while at the same time maintaining firm electric, connection.

Specifically considered, the invention relates to means whereby anelectric wire may be connected to'a plug which cooperates with a socket,said plug .being required to be rotated when coupling or uncoupling thesame when connecting or disconnect-f 'ing the wlre.

The invention provides a connection which operates by a snap action andwhich is free to turn, whereby to prevent any torsional strain 'on thewire ,or joint.

Other objects and advantages will be apparent and suggest themselves asthe nature of the invention is understood.

While the drawings illustrate an embodiment of the invention it is to beunderstood that in adapting'the same to meet different conditions andrequirements, various changes in the form, proportion and minor detailsof construction may be resorted to without departing from the nature ofthe invention.

Referring to the accompanying drawings .forming a part of theapplication,

Figure 1 is a detail view of an electric wire connection embodying theinventlon,

the parts being separated,

Figure 2 is an enlarged sectional detail,

the parts being connected,

Fi re 3 is an end mem r,

' ification wherein the connection socket spring, and

' Figure 4 is a detail plan view of the Figure 5 IS a sectional detailof a modiis applied toadouble contact plug.

view of a coupling Corresponding and like parts I are referred to in thefollowing description and designated in the several views of thedrawings by like reference characters. a

The numeral 1 designates the usual plug of an electric wire connector,the same being provided at opposite sides with studs 2 for cooperationwith the bayonet slots of a.

cooperating socket in a manner. well understood. Th1s plug may be of anyinsulatingmaterial and is provided with a contact 3 which may be single,as illustrated in Figures 1, and 2, or double, as indicated in Figure 4,accordingly as the plug is of the single or double contact type. A cap 4is threaded to an end of the plug 1 and is apertured for the passage ofthe wire 5 to be connected to the plug 1.

In accordance with the present invention,

a stud 6 is integral with, riveted to or otherwise applied to the plug 1and is in electric connection with the contact 3. A socket '7 issoldered or otherwise applied to the terminal of the wire 5, and 1sadapted to engage the stud 6 by a snap action. The stud 6 and co-actingsocket 7 may be of any type or make common in the art of snap orseparable fast-enings. For instance socket 7 has an entrance opening 7?for the ball of stud 6 and the socket contains a wire spring 8 havingjaws 9 between which the ball of the stud 6 is adapted to be forced uponengagement and disengagement with the socket, the jaws 9- tending toassume'the position shown in Figure 4 so that they will contract aboutthe stud inwardly of the head, to retain the stud as shown in Figures 2and 5. The parts 6 and 7 ma be attached to the cooperating parts 1 an 5in any preferred way and admit of the wire 5 being connected to the pluglby a snap action, or instantly disconnect-ed therefrom, the connectionadmitting of the plug 1 turning to effect coupling or uncoupling thereofwithout creating any torsion on the wire 5. As shown most clearly inFigure 2,

- the cap 1, besides protecting the joint, func-' tions to secure andprevent casual separation thereof, since the socket 7 is adapted to beclamped between the cap and the adjacent end of the plug 1. As hereinbe,

fore stated, Figures 1 and 2 show the inven--' tion applied to a singlecontact plug, whereas Figure 4 shows it applied to a double contact lug,the connectin means being substantially the same in eac instance.

I Whatis claimed is: I

vided with a contact, a stud applied to the 'plug and in electricconnection with the contact thereof, an electric wire, a socket appliedto the electric Wire and adaptedv to be coupled to said stud by a snapaction and to relatively turn to prevent torsional strain on the Wire,and a cap receiving the wire and having screw thread connection with theplug and adapted to prevent casual separation of the socket from thestud.

2. In combination, an electric plug provided with a contact, a secondcontact applied to said plug and in electric connection with the firstcontact, an electric wire,

a contact applied to the electric wire and adapted to connect to thesecond contact for turning movement relative thereto to preventtorsional strain on the Wire, a cap through which the Wire passes, andsaid cap having supported connection with the plug and extended inwardlyto overlap the lower surface of the second contact to. prevent casualseparation of the secondv contact-s, said cap being turnableindepemlently of the contacts and wires.

In testimony whereof I afiix my signature.

ORGERIO ABBAD-INI.

